Around the turn of the 21st century, much of the environmental conversation was about the hole in the ozone layer. There was an understandable panic after it was discovered in the 1980s that certain man-made chemicals were causing the depletion of the Earth's protective layer. In recent years, however, the conversation is much more about climate change; we hardly hear anything about the ozone layer. Which leaves us wondering: what ever happened to the hole in the ozone layer?
Curious to find out? Click through the gallery to learn all about it.